Test/review of Ebat 20700 3000mAh E7-20P30 (Blue)

Ebat 20700 3000mAh E7-20P30 (Blue)

Official specifications:

  • Model: E7-20P30

  • Normal voltage: 3.7V

  • Normal capacity: 3000mah

  • Charging voltage: 4.2V ± 0.5V

  • Discharging cut-off voltage: 2.5V

  • Discharge rate: 40A

  • Rechargeable: Yes

  • Size: 18±2mm Dia 70±1mm Length

  • Cycle life: > 500 times

  • Operation Temperature Range: Charge(0~45°C ) Discharge(–10~60°C )

Ebat also have a battery in the new size 217100, capacity is not that high, but it can deliver lot of current.

The discharge curves looks good with nice matching between the two cells and nearly constant capacity at any current.

At 30A the battery gets warm, but not too warm, i.e. it can handle the current.


This is a nice high current battery and the slightly large size compare to a 18650 can be seen on the improved performance.
This battery is mostly for people that needs well above 10A, for lower currents look at a 18650.

Notes and links

The batteries was supplied by EBat for review.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries
Compare to 26650 and other batteries

30A continuous is good. But, the 3000mAh capacity is a bit disappointing.

Thanks for your review. I always keep an eye open for them.
Especially when it concerns batteries with dimensions 20700 and 21700.

Thanks for the review. Nice to see more 20700 batteries come to the market.